Window guard



- .F THOMAS W. HOUSTON, F KANSASGITY, MIS$OURL Fatented June 2, 1925.

UNITED STATES PATENT OFFICE. l

wmnow GUARD.

Application filed. December 20, 1923. SerialNo. 681,855.

To all w 7mm it'may concern: 1 1

Be it known that I, Trioniis 1V. HOUSTON, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in TVindow Guards; and I do declare the following to be a full, clear, and exact description of the in vention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had tothe accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification- I I This invention relates to window guards and the primary object thereof is to provide an extensible and contractible window guard made of sections which may slide one with respect to the other and which may be securely fastened in anyadjustedposition within the extreme limits, the guard being so designed that when it has been extended or contracted to fit the window frame, it will be held in its adjusted position in a manner to prevent tampering from the outside of the window glar proof. I

Fig. 1 is a perspective view of a window frame to which my invention is applied.

in order to make it bur- Fig. 2 is an elevational view of the guard with the cover plate for the lock case re moved to show the interior construction of the lock. i

Fig. 3 is a top edge view of the guard.

Fig. 4 is a detailed perspective view of the latch actuator. I

Fig. 5 is a cross sectional view on the line 5-5 of Fig. 2.

Fig. 6 is a vertical longitudinal sectional view through the housing and one of the latches, the bar engaged by the latch being shown in fragmentary elevation.

Referring now to the drawings by numerals of reference. I

1 designates a window frame of usual construction to which my invention may be applied. The guard is shown as consisting nected by rods 9. The rods 8 extendv through. the end rail 6 of the member 3 and the rods 9 extend through the rail 5 of the member 2 so that the two sections are secured together. forms the walls of a housing 10 in which are latches consisting of spring plates 11' and 12 fastened to the rail 6 and having eyes. or openings 13 through which the rods 8 extend. The free ends of theplates 11 and 12 are edged away from the wall of the housing by coil springs 14L so that the edges of the open ings 13 tendtoimpinge on the rodsto provide a latch for holding thesections or members 2 and 3 from having relative movement in one direction, that is in a retracted direction. The plates can. be moved out of impinging engagement with the rods by a rocking shaft 15 in the housingjournaled in the staples 15. The, roekshaft 15 is bent intermediate its ends to form a manually ngageable crank 16 which projectsthroug 1 a slot16' in the housing. The ends of therock The rail-v6 V shaft 16 are provided with plate engaging I fingersl'? and 18 which are adapted to bear against the plates 11 and 12 respectively, to move them against the action of the springs to release the rods 8. The rock shaft can be held against rocking by a padlock 19, the shackle of which may pass through the open looped crank 16. a 1 i The rails 4 and 7 are provided with lugs 20 and 21 respectively, whichare adapted to engage recesses 22 in the rabbets of the window frame sothat the guard willbe held against sidewise movement. hen the window guard is extended the width of the opening of the Window frame, so. that the lugs 20 and 21 engage the recesses, the lock will be put in place so that it will be impossible to retract the guard to remove it from engagement with the window frame.

.When it is desired to remove the guard from the window frame the padlock will be taken off and the rock shaft 14 will be rocked so that the fingers 17 and 18 will press against the plates 11 to move their im-' pinging edges out of-contact with the rods 8, then the guard may be removed.

The padlock should preferably have a shackle of hard steel so that it cannot be *easily broken and if the rock'shaft 15 is cut or broken then the plates 11 and 12 cannot be moved out of engagement with the rods 8. The guard is to be made of metal and sneak thievesanc l'the like from entering a building through an open *window in which the guard 1s lnstalled.

\Vhat I claim and desire to secure by Let ters-Patent 1s:

1. In combination, tWo frames, each havlng end bars and longitudinal rods, the longitudinal rods of one-frame passingithrough an end bar of a complementary frame, looking mechanism carried by one of the end bars through which the rods of "the comple= mentary framepiojects, said locking mech anism comprising a I looking plate havingan opening "through which one of the rods eX position 'a'nd means for"simultaneously r'e'- leasing the plates :from engagement with the rods. i

e 3-. In combinationytwo "frames, each hav ing end bars and longitudinal rods,-the"lon'- g'itudi nal rods of on'e framepassin'g throng-l1 an end bar of a complementary frame, looking mechanism carried by'oneof thecnd bars through Which th-e rodsof the temple men-taryframe project} said locking mechanisnrconiprising locking plates "havin gflopen ings through which certain of I the rods-entend the edges of the 'oliaenings l impinging on the rodsg'means for lrolding thep'latesin impinging-i position and means'for releasing the plates from engagen'ient with the rode, the last; named means comprising a rock shaft in the case having a central crank and o terminal fingers, the fingers being effective to move th'eplzits-out of functional position.

411a combination, two frames, each having end bars and longitudinal rods, the longitudinal rods of one frame passing through an end bar of a complementary f1 ame,'locke ingwmechanis'm carriedby one of the end bars through which rods of the coinple'inen tary frameproject, said locking mechanism comprising plates having openings through Which certain off-the rods extend, the edges of the openings impinging on -the rods, means forholdingathe plates in impinging position and means for releasing the plates from engagement with the: rods, thelast named means comprising a rock shaft; parallel with one of the end bars h avinga central crankand terminallingers, the fingers being effective to move the plates outof functional position,- the crank havingaa loop to be engaged by a hElSPfO'E a padlock to prevent therock shaft from turning.

5. In combinatiomtwo guard frames, each comprising 'end bars and longitudinal rods, the rods of one frame projecting'throngh one of the end bars-of acomplementary frame, a locking mechanism carriedbyone of the end bars througlr which the rods of the complementary frame pass; said locking mechanismincluding a plate having a transverse" opening in" line withthe: opening through which the rod of a complementary guard frame projects with the edge of the opening impinging on one of the rods projecting through it" and through one ofthe :endb'argmeansforurgingthe plate into impinging position and a rock shaft vto move the plate out of impinging position. i

In testimony whereof-I aflixrmy slgnatnrc.

THOMAS W IIOUSTON. 

